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authorStefan Kristiansson <stefan.kristiansson@saunalahti.fi>2014-05-17 19:18:58 +0300
committerStafford Horne <shorne@gmail.com>2017-02-06 21:50:43 +0900
commit8c9b7db0de3d64c9a6fcd12622636d4aa6a8c30c (patch)
tree2b764ae08bee406a851d79776c50b997e464c6dc /arch/openrisc/kernel
parentc2dc72437a5504bf8f4343ed83ae745afa388522 (diff)
openrisc: head: refactor out tlb flush into it's own function
This brings it inline with the other setup oprations done like the cache enables _ic_enable and _dc_enable. Also, this is going to make it easier to initialize additional cpu's when smp is introduced. Signed-off-by: Stefan Kristiansson <stefan.kristiansson@saunalahti.fi> [shorne@gmail.com: Added commit body] Signed-off-by: Stafford Horne <shorne@gmail.com>
Diffstat (limited to 'arch/openrisc/kernel')
-rw-r--r--arch/openrisc/kernel/head.S38
1 files changed, 22 insertions, 16 deletions
diff --git a/arch/openrisc/kernel/head.S b/arch/openrisc/kernel/head.S
index 63ba2d96a860..a22f1fc40a6c 100644
--- a/arch/openrisc/kernel/head.S
+++ b/arch/openrisc/kernel/head.S
@@ -522,22 +522,8 @@ enable_dc:
l.nop
flush_tlb:
- /*
- * I N V A L I D A T E T L B e n t r i e s
- */
- LOAD_SYMBOL_2_GPR(r5,SPR_DTLBMR_BASE(0))
- LOAD_SYMBOL_2_GPR(r6,SPR_ITLBMR_BASE(0))
- l.addi r7,r0,128 /* Maximum number of sets */
-1:
- l.mtspr r5,r0,0x0
- l.mtspr r6,r0,0x0
-
- l.addi r5,r5,1
- l.addi r6,r6,1
- l.sfeq r7,r0
- l.bnf 1b
- l.addi r7,r7,-1
-
+ l.jal _flush_tlb
+ l.nop
/* The MMU needs to be enabled before or32_early_setup is called */
@@ -629,6 +615,26 @@ jump_start_kernel:
l.jr r30
l.nop
+_flush_tlb:
+ /*
+ * I N V A L I D A T E T L B e n t r i e s
+ */
+ LOAD_SYMBOL_2_GPR(r5,SPR_DTLBMR_BASE(0))
+ LOAD_SYMBOL_2_GPR(r6,SPR_ITLBMR_BASE(0))
+ l.addi r7,r0,128 /* Maximum number of sets */
+1:
+ l.mtspr r5,r0,0x0
+ l.mtspr r6,r0,0x0
+
+ l.addi r5,r5,1
+ l.addi r6,r6,1
+ l.sfeq r7,r0
+ l.bnf 1b
+ l.addi r7,r7,-1
+
+ l.jr r9
+ l.nop
+
/* ========================================[ cache ]=== */
/* aligment here so we don't change memory offsets with